WEALDEN PTERODACTYLES. 537 



Order PTEBOSAUBIA. 



MESOZOIC PTERODACTYLES. 



Havtng in previous Sections on extinct volant Reptiles defined species (<?. (/. Ptero- 

 dadylus compressirostris, Pter. Cuvieri, &c., Pis. 1 — 11, pp. 234 — 393) from the 

 Upper Chalk, and others [e. g. Pterodadylus macronyx. Pis. 15 — 17, pp.463 — 502) 

 from the Lower Lias, I propose, here^ to add a brief account of evidences of Pterosauria 

 which have reached me from intervening formations of the Mesozoic period. 



§ 1. Pterosauria from the ' Gault' {Pterosauria, PL 19, figs. 5 and 6). 



I commence with one from the deposit called ' Gault,' at Folkestone, which is 

 intermediate in age between the Upper and Lower Greensands, from the former of 

 which Pterosaurian remains, remarkable for their great size {Pterodadylus Sedywickii, 

 e. g.), have been described and figured (p. 380, PI. 7). Examples of the winged 

 order of Reptiles from the present formation have hitherto been very scanty. The 

 first that has been submitted to my examination is the subject of the following descrip- 

 tion, and represents the undernamed species. 



A. — Pterodadylus Daviesii, Owen. 



Symphysis Mandibulce, and Teeth {Pterosauria, Plate 19, figs. 5 and 6). 



That this fossil, which is figured of the natural size from the lateral (fig. 5) and oral 

 (fig. 6) surfaces, is the fore part of the symphysis of a lower jaw, and not that part of the 

 palate of the upper jaw, is shown by the medial groove in place of the medial ridge on 

 the surface of the bone which was next the mouth, which surface is here on the upper 



